3 * David Feng <fenghua@phytium.com.cn>
4 * Sharma Bhupesh <bhupesh.sharma@freescale.com>
6 * SPDX-License-Identifier: GPL-2.0+
13 #include <linux/compiler.h>
14 #include <asm/semihosting.h>
16 DECLARE_GLOBAL_DATA_PTR;
26 * Clear spin table so that secondary processors
27 * observe the correct value after waken up from wfe.
29 *(unsigned long *)CPU_RELEASE_ADDR = 0;
31 gd->ram_size = PHYS_SDRAM_1_SIZE;
36 * Board specific reset that is system reset.
38 void reset_cpu(ulong addr)
42 #ifdef CONFIG_BOARD_LATE_INIT
43 int board_late_init(void)
45 #ifdef CONFIG_SEMIHOSTING
47 * Please refer to doc/README.semihosting for a more complete
50 * We require that the board include file defines these env variables:
58 * For the "fdt chosen" startup macro, this code will then define:
59 * - initrd_end (based on initrd_addr_r plus actual initrd_size)
61 * We will then load the kernel, initrd, and fdt into the specified
62 * locations in memory in a similar way that the ATF fastmodel code
63 * uses semihosting calls to load other boot stages and u-boot itself.
66 /* Env variable strings */
67 char *kernel_name = getenv("kernel_name");
68 char *kernel_addr_str = getenv("kernel_addr_r");
69 char *initrd_name = getenv("initrd_name");
70 char *initrd_addr_str = getenv("initrd_addr_r");
71 char *fdt_name = getenv("fdt_name");
72 char *fdt_addr_str = getenv("fdt_addr_r");
73 char initrd_end_str[64];
75 /* Actual addresses converted from env variables */
80 /* Actual initrd base and size */
81 unsigned long initrd_base;
82 unsigned long initrd_size;
87 /* Make sure the environment variables needed are set */
88 if (!(kernel_addr_str && initrd_addr_str && fdt_addr_str)) {
89 printf("%s: Define {kernel/initrd/fdt}_addr_r\n", __func__);
92 if (!(kernel_name && initrd_name && fdt_name)) {
93 printf("%s: Define {kernel/initrd/fdt}_name\n", __func__);
97 /* Get exact initrd_size */
98 initrd_size = smh_len(initrd_name);
99 if (initrd_size == -1) {
100 printf("%s: Can't get file size for \'%s\'\n", __func__,
106 initrd_base = simple_strtoul(initrd_addr_str, NULL, 16);
107 initrd_addr_r = (void *)initrd_base;
108 sprintf(initrd_end_str, "0x%lx", initrd_base + initrd_size - 1);
109 setenv("initrd_end", initrd_end_str);
111 /* Load kernel to memory */
112 fdt_addr_r = (void *)simple_strtoul(fdt_addr_str, NULL, 16);
113 kernel_addr_r = (void *)simple_strtoul(kernel_addr_str, NULL, 16);
116 * The kernel must be lower in memory than fdt and loading the
117 * kernel must not trample the fdt or vice versa.
119 avail = fdt_addr_r - kernel_addr_r;
121 printf("%s: fdt must be after kernel\n", __func__);
124 smh_load(kernel_name, kernel_addr_r, avail, 1);
126 /* Load fdt to memory */
127 smh_load(fdt_name, fdt_addr_r, 0x20000, 1);
129 /* Load initrd to memory */
130 smh_load(initrd_name, initrd_addr_r, initrd_size, 1);
132 #endif /* CONFIG_SEMIHOSTING */
135 #endif /* CONFIG_BOARD_LATE_INIT */
138 * Board specific ethernet initialization routine.
140 int board_eth_init(bd_t *bis)
143 #ifdef CONFIG_SMC91111
144 rc = smc91111_initialize(0, CONFIG_SMC91111_BASE);